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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ![](http://www.rhinostudio.cn/files/course/2019/05-31/210814e726e1569263.png) ## **Is Planar** 判斷一個曲面是不是平面曲面,返回布爾值以及這個曲面的中心平面。I端按說是限制測試僅限于修剪曲面內部,意思就是指,如果一個修剪后的曲面,剩余部分為平面,則無論原曲面是否為平面曲面,都判定為平面曲面。比如下面這個面,原曲面肯定不是平面,但是修建后就是了。 ![](http://www.rhinostudio.cn/files/course/2019/05-31/211006e68682259299.png) ![](http://www.rhinostudio.cn/files/course/2019/05-31/211034a6d858276222.png)
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